/*!	 plant.h
**	 Header file for implementation of the "Plant" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007, 2008 Chris Moore
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_PLANT_H
#define __SYNFIG_PLANT_H

#include <list>
#include <vector>
#include <synfig/layers/layer_composite.h>
#include <synfig/segment.h>
#include <synfig/blinepoint.h>
#include <synfig/value.h>
#include <synfig/gradient.h>
#include <synfig/angle.h>
#include "random.h"
#include <synfig/rect.h>

using namespace synfig;
using namespace std;
using namespace etl;

class Plant : public Layer_Composite, public Layer_NoDeform
{
    SYNFIG_LAYER_MODULE_EXT
private:
    // Parameter: (std::vector<BLinePoint>)
    ValueBase param_bline;
    // Parameter: (Point)
    ValueBase param_origin;
    // Parameter: (Gradient)
    ValueBase param_gradient;
    // Parameter: (Angle)
    ValueBase param_split_angle;
    // Parameter: (Vector)
    ValueBase param_gravity;
    // Parameter: (Real)
    ValueBase param_velocity;
    // Parameter: (Real)
    ValueBase param_perp_velocity;
    // Parameter: (Real)
    ValueBase param_size;
    // Parameter: (bool)
    ValueBase param_size_as_alpha;
    // Parameter: (bool)
    ValueBase param_reverse;
    // Parameter: (Real)
    ValueBase param_step;
    // Parameter: (Random)
    ValueBase param_random;
    // Parameter: (int)
    ValueBase param_splits;
    // Parameter: (int)
    ValueBase param_sprouts;
    // Parameter: (Real)
    ValueBase param_random_factor;
    // Parameter: (Real)
    ValueBase param_drag;
    // Parameter: (bool)
    ValueBase param_use_width;

    bool bline_loop;

    struct Particle {
        Point point;
        Color color;

        Particle(const Point &point, const Color& color):
            point(point), color(color) { }
    };

    mutable std::vector<Particle> particle_list;
    mutable Rect	bounding_rect;
    Real mass;

    mutable bool needs_sync_;
    mutable Mutex mutex;

    void branch(int n, int depth, float t, float stunt_growth, Point position, Vector velocity)const;
    void sync()const;
    String version;
    void draw_particles(Surface *surface, const RendDesc &renddesc)const;
    void draw_particles(cairo_t *cr)const;

public:

    Plant();

    void calc_bounding_rect()const;

    virtual bool set_param(const String & param, const ValueBase &value);

    virtual ValueBase get_param(const String & param)const;

    virtual bool set_version(const String &ver);

    virtual Vocab get_param_vocab()const;

    virtual bool accelerated_render(Context context, Surface *surface, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual bool accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    using Layer::get_bounding_rect;
    virtual Rect get_bounding_rect(Context context)const;
};

#endif